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Commercial Physical Research, Madison, Pennsylvania. NPDES permit PA0000906, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 001 |
| Cadmium, total [as Cd] | monthly average | report only (ug/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | ≤ 35.5 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 55.4 ug/L | all year | 001 |
| Iron, dissolved [as Fe] | monthly average | ≤ 2.35 mg/L | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 3.67 mg/L | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 001 |
| Manganese, total [as Mn] | monthly average | report only (ug/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (ug/L) | all year | 001 |
| Silver, total [as Ag] | monthly average | report only (ug/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 001 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 001 |
| Osmotic pressure, total, unf whl wtr | monthly average | report only (mOsm/kg) | all year | 001 |
| Osmotic pressure, total, unf whl wtr | daily maximum | report only (mOsm/kg) | all year | 001 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 105.1 deg F | Nov | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.7 deg F | Nov | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Oct | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 108.4 deg F | Oct | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 77.3 deg F | Dec | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Mar–Sep | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 91.5 deg F | Feb | 002 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.1 deg F | Jan | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | instantaneous maximum | ≤ 60 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 002 |
| Cadmium, total [as Cd] | monthly average | ≤ .78 ug/L | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | ≤ 1.21 ug/L | all year | 002 |
| Chromium, hexavalent [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Silver, total [as Ag] | monthly average | report only (ug/L) | all year | 002 |
| Silver, total [as Ag] | daily maximum | report only (ug/L) | all year | 002 |
| Strontium, total [as Sr] | monthly average | report only (ug/L) | all year | 002 |
| Strontium, total [as Sr] | daily maximum | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 002 |
| Chlorine, free available | monthly average | ≤ .2 mg/L | all year | 002 |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 002 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 003 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 003 |
| Chromium, hexavalent [as Cr] | monthly average | ≤ 87.7 ug/L | all year | 003 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 137 ug/L | all year | 003 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 003 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 003 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 003 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 003 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 005 |
| pH | daily maximum | report only (SU) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 108.4 deg F | Oct | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Oct | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.7 deg F | Nov | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 105.1 deg F | Nov | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.1 deg F | Jan | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 91.5 deg F | Feb | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 77.3 deg F | Dec | 006 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Mar–Sep | 006 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 006 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 006 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 006 |
| Chlorine, free available | monthly average | ≤ .2 mg/L | all year | 006 |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 006 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 007 |
| pH | daily maximum | report only (SU) | all year | 007 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 007 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 007 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 91.5 deg F | Feb | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Oct | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 108.4 deg F | Oct | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 105.1 deg F | Nov | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.7 deg F | Nov | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 77.3 deg F | Dec | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Mar–Sep | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.1 deg F | Jan | 008 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 008 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 008 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 008 |
| Chlorine, free available | monthly average | ≤ .2 mg/L | all year | 008 |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 008 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Oct | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.1 deg F | Jan | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 87.7 deg F | Nov | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 105.1 deg F | Nov | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 108.4 deg F | Oct | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | Mar–Sep | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 91.5 deg F | Feb | 009 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 77.3 deg F | Dec | 009 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 009 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 009 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 009 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 009 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 009 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 009 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 009 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 009 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 009 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 011 |
| pH | daily maximum | report only (SU) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 012 |
| pH | daily maximum | report only (SU) | all year | 012 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 012 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 012 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 012 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 016 |
| pH | daily maximum | report only (SU) | all year | 016 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 016 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 016 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 016 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 016 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 018 |
| pH | daily maximum | report only (SU) | all year | 018 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 018 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 018 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 018 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 018 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 024 |
| pH | daily maximum | report only (SU) | all year | 024 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 024 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 024 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 024 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 024 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 028 |
| pH | daily maximum | report only (SU) | all year | 028 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 028 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 028 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 028 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 028 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 038 |
| pH | daily maximum | report only (SU) | all year | 038 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 038 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 038 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 038 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 038 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 039 |
| pH | daily maximum | report only (SU) | all year | 039 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 039 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 039 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 039 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 039 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 101 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 101 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 101 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 101 |
| Cadmium, total [as Cd] | monthly average | report only (ug/L) | all year | 101 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 101 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 101 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 101 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 101 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 101 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 101 |
| Manganese, total [as Mn] | monthly average | report only (ug/L) | all year | 101 |
| Manganese, total [as Mn] | daily maximum | report only (ug/L) | all year | 101 |
| Silver, total [as Ag] | monthly average | report only (ug/L) | all year | 101 |
| Silver, total [as Ag] | daily maximum | report only (ug/L) | all year | 101 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 101 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 301 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 301 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 301 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 301 |
| Cadmium, total [as Cd] | monthly average | report only (ug/L) | all year | 301 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 301 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 301 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 301 |
| Iron, dissolved [as Fe] | instantaneous maximum | ≤ 7 mg/L | all year | 301 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 301 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 301 |
| Manganese, total [as Mn] | monthly average | report only (ug/L) | all year | 301 |
| Manganese, total [as Mn] | daily maximum | report only (ug/L) | all year | 301 |
| Silver, total [as Ag] | monthly average | report only (ug/L) | all year | 301 |
| Silver, total [as Ag] | daily maximum | report only (ug/L) | all year | 301 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 301 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 301 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 301 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 301 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 301 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 301 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 7 Engineering, Accounting, Research and Management Services permits in Pennsylvania.
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On EPA ECHO: Facility report · DMR history
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